ios - 快速多个 View 来点击数组中的手势

Question

我有一个图像 slider ，其中多个图像添加到 ScrollView 中。每个都存储在我的自定义数据类型的数组中(名为 Slide)。我像这样循环浏览它们:

    for (index, slide) in slides.enumerated() {
        let imageView = UIImageView()
        imageView.image = UIImage(named: slide.image)       //set the imageView with the imageName in this slide
        imageView.contentMode = .scaleAspectFit
        let xPos = self.view.frame.width * CGFloat(index)   //calculate x depending upon slide index
        imageView.frame = CGRect(x: xPos, y: -200, width: self.SVSlider.frame.width, height: self.SVSlider.frame.height)
        SVSlider.contentSize.width = SVSlider.frame.width * CGFloat(index + 1)  //add slide image to scrollview
        SVSlider.addSubview(imageView)

        //add tap function to slide
        imageView.isUserInteractionEnabled = true
        imageView.tag = index
        let tapImage = UITapGestureRecognizer(target: self, action: #selector(slideAction(_:)))
        imageView.addGestureRecognizer(tapImage)
    }

每个幻灯片图像都附加到“slideAction”方法，如下:

@objc func slideAction(_ sender: UITapGestureRecognizer) {
    let selName = slides[(sender.view?.tag)!].target
    NSObject.perform(Selector(selName))
}

但是当我单击图像时应用程序会抛出错误。通过调试，我可以看到“标签”已正确设置为幻灯片索引号。我想执行幻灯片对象中保存的目标操作。 (当前目标是方法名称的字符串 - 以“:”结尾)。

如何获取“slideAction”以转到幻灯片对象中的方法？

Answer 1

试试这个，在自定义类中创建目标方法callMethodDirectly并调用它

@objc func slideAction(_ sender: UITapGestureRecognizer) {
    let selName = slides[(sender.view?.tag)!]  
    selName.callMethodDirectly()
}

class slide:NSObjcet
{
  func callMethodDirectly()
  {  
     // implement target code here
  }
}